Hartmut Knofel

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Leverkusen, DT

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of polyamines
- Patent number 4,094,907
- Issue date Jun 13, 1978
- Bayer Aktiengesellschaft
- Hartmut Knofel
Information Patent Grant
Process for the preparation of aromatic polyamines
- Patent number 4,093,658
- Issue date Jun 6, 1978
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyamines
- Patent number 4,087,459
- Issue date May 2, 1978
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of aromatic polyamines
- Patent number 4,061,678
- Issue date Dec 6, 1977
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of polyamines
- Patent number 4,025,557
- Issue date May 24, 1977
- Bayer Aktiengesellschaft
- Willi Eifler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of polyamines
- Patent number 3,996,283
- Issue date Dec 7, 1976
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polyisocyanates
- Patent number 3,952,042
- Issue date Apr 20, 1976
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C07 - ORGANIC CHEMISTRY